US7149272B2 - Filter for cooling water in a light water cooled nuclear reactor - Google Patents

Filter for cooling water in a light water cooled nuclear reactor Download PDF

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Publication number
US7149272B2
US7149272B2 US10/466,832 US46683203A US7149272B2 US 7149272 B2 US7149272 B2 US 7149272B2 US 46683203 A US46683203 A US 46683203A US 7149272 B2 US7149272 B2 US 7149272B2
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United States
Prior art keywords
sheets
filter
filter according
wave
flow direction
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Expired - Lifetime, expires
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US10/466,832
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US20040076253A1 (en
Inventor
Anders Söderlund
Håkan Söderberg
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Westinghouse Electric Sweden AB
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Westinghouse Electric Sweden AB
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Publication of US20040076253A1 publication Critical patent/US20040076253A1/en
Assigned to WESTINGHOUSE ELECTRIC AB SWEDEN reassignment WESTINGHOUSE ELECTRIC AB SWEDEN CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: ATOM, WESTINGHOUSE AB
Assigned to WESTINGHOUSE ELECTRIC AB SWEDEN reassignment WESTINGHOUSE ELECTRIC AB SWEDEN CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: WESTINGHOUSE ATOM AB
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/322—Means to influence the coolant flow through or around the bundles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/30—Assemblies of a number of fuel elements in the form of a rigid unit
    • G21C3/32—Bundles of parallel pin-, rod-, or tube-shaped fuel elements
    • G21C3/3206—Means associated with the fuel bundle for filtering the coolant, e.g. nozzles, grids
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Definitions

  • the present invention refers to a filter according to the preamble of claim 1 .
  • the invention also refers to a fuel assembly.
  • the invention will be described in an application for nuclear plants for cleaning the cooling water, which flows through a nuclear reactor of a light water type, from debris and other particles.
  • the invention is not limited to any particular positioning of the filter in the nuclear plant.
  • the purpose of the cooling water is to function as a cooling fluid and a moderator in the nuclear reactor of the nuclear plant. If debris or other particles are permitted to follow the cooling water in the core of the reactor, these may cause defects to the cladding of the fuel rods, which may result in such defects that nuclear fuel, i.e. uranium leaks out into the cooling water. At larger defect, the operation of the reactor has then to be interrupted and the failed fuel be replaced. Such a replacement is time-consuming and expensive. Debris and other particles may of course also cause defects to other components in a nuclear plant, for instance pumps.
  • Such debris may consist of metal chips, which are formed in connection with different repairs of components of the plant, metal wires or other foreign particles which have reached the plant from outside.
  • Particularly difficult particles are such with an elongated shape, i.e. thin wires or chips which may have a length of down to 10 mm.
  • Such particles tend to get attached to the fuel assembly at a higher level, for instance to spacers.
  • the particles are vibrating in the cooling water stream and may wear the cladding of the fuel rods so that a hole arises.
  • Such particles may for instance be blasting sand with the size of 1–2 mm and mineral particles, which may reach the cooling water in case of defects.
  • a filter in the lower part of the fuel assemblies, which include a number of fuel rods and which form the core of the reactor.
  • the cooling water which circulates through the reactor, passes through this lower part of the fuel assemblies.
  • the bottom plate of the fuel assembly may be provided with a plurality of small holes through which the cooling water passes. Possible debris or other particles may thus be caught by such a filter.
  • There are two important requirements on such a filter on one hand it is to catch all particles which may cause defects in the reactor in an efficient manner and on the other hand it is to have a low flow resistance and pressure drop.
  • SE-B-465 192 U.S. Pat. No. 5,481,577 and U.S. Pat. No. 5,030,412 disclose different such filters for catching debris in the cooling water flowing through a nuclear reactor.
  • SE-B-465 192 suggests holes in the bottom plate, which have different portions with centre lines that are displaced in relation to each other.
  • U.S. Pat. No. 5,481,577 suggests a filter which consists of a number of sheets arranged beside each other and forming passages for the cooling water. The passages are relatively thin but have a large width, which makes it possible for elongated debris particles to pass.
  • 5,030,412 discloses a filter, which includes a plane metal sheet, which has relatively elongated passages that let the cooling water through but stops possible particles. Upstream of the metal plate, parallel, substantially vertical sheets are provided at a small distance from each other. These parallel sheets have an intermediate curvature, which contributes to giving the particles a desired extension transversally to the cooling water flow before they reach the metal sheet.
  • DE-U-296 15 575 discloses another filter for a fuel assembly in a nuclear plant.
  • the filter consists of a frame, in which a package of sheets are provided beside each other in such a way that cooling water passages are formed between the plates.
  • the plates have a wave-shape, which either extends in a direction transversally to the flow direction or in the flow direction.
  • the object of the present invention is to provide a filter, which has a low flow resistance and which may separate particles from a fluid in an efficient manner. Furthermore, it is aimed at a filter that can be manufactured at a low cost.
  • the device initially defined which is characterised by the combination of the features that said sheets along the first portion have a wave-shape extending in a direction transversally to the flow direction and that said sheets along the third portion have a wave-shape extending in the flow direction.
  • Such a filter which may be manufactured of relatively thin sheets, has a low flow resistance since it does not require any loose components, connection members or the like which extend in the flow path. Thanks to the defined wave-shape of the sheets, a plurality of separate channels, which are arranged beside each other and which enable an efficient catching of particles in the cooling water, are obtained.
  • the applicant has found that elongated particles are transported in the cooling water flow with an extension which substantially extends transversally to the flow direction. Such particles may consequently be caught by the filter by means of the wave-shape of the first portion.
  • the particles which for any reason are transported with an extension extending substantially in parallel with the flow direction, will be caught by the filter by means of the wave-shape of the third portion.
  • the wave-shape of the sheets into directions perpendicular to each other also gives a high strength to the filter, which thus may be made self-supporting and may be mounted in for instance a fuel assembly without any frame extending around the sheets.
  • said wave-shapes are continuous, i.e. without any sharp transitions. In such a way, the strength is further improved and at the same time the manufacturing of the sheets by form-pressing is facilitated.
  • said sheets have, also along the second portion a wave-shape in said direction transversally to the flow direction. Elongated particles which for any reason pass the third portion will have an extension transversally to the flow direction and thus be stopped by means of the wave-shape of the second portion.
  • said sheets are along the first portion arranged beside each other in such a way that substantially each pair of adjacent sheets abuts each other at valleys and ridges, respectively, of said wave-shape, wherein each passage between two adjacent sheets forms a plurality of inlet channels arranged beside each other.
  • said sheets may, along the second portion, also be arranged beside each other in such a way that substantially each pair of adjacent sheets abuts each other at valleys and ridges, respectively, of said wave-shape, wherein each passage between two adjacent sheets forms a plurality of outlet channels arranged beside each other.
  • said sheets are connected to each other at at least one point at said valleys and ridges, respectively, preferably by means of a fuse weld, for instance in the form of a spot weld.
  • a further simple welding method is to weld the sheet edges with or without supply of additional weld material.
  • the heat may be supplied by means of for instance an arc (TIG), laser or electron beam.
  • TOG arc
  • the sheets may also be welded or brazed together with additional material.
  • substantially each wave of said wave-shape of the first portion and the second portion has a maximum amplitude, wherein the maximum amplitude decreases continuously in the direction towards the third portion.
  • this maximum amplitude is substantially zero at the transition to the third portion.
  • each inlet channel has substantially the same flow area as each outlet channel.
  • the centre line of substantially each inlet channel may advantageously be substantially concentric with the centre line of a respective corresponding outlet channel.
  • the third portion forms an intermediate channel between two adjacent sheets, which is arranged to convey the cooling water between the first portion and the second portion.
  • the sheets along substantially the whole third portion are arranged at a distance from each other, i.e. they do not abut each other.
  • said sheets may along the third portion at least include a part portion extending substantially in parallel with said direction transversally to the flow direction.
  • the third portion includes projections extending into the intermediate channel.
  • projections By means of such projections, possible particles, which have penetrated the filter through the inlet channel and are transported with an extension transversally to the flow direction, may in an efficient manner be prevented from flowing through the filter.
  • said projections are arranged along a line extending substantially in parallel with said direction transversally to the flow direction, wherein one such part portion is arranged on each side of the projections.
  • said centre line of the inlet channel and the outlet channel extends between two adjacent projections of the third portion.
  • a possible particle has to deviate further from its path in order to be able to pass through the third channel.
  • projections which may be formed by means of a plastic deformation of the sheet and/or include a tab cut from the sheet, will hinder elongated particles extending transversally to the flow direction from passing through the intermediate channel.
  • the object is also obtained by the fuel assembly initially defined, which is characterised by the combination of features that said sheets along the first portion have a wave-shape extending in a direction transversally to the flow direction and that said sheets along the third portion have a wave-shape extending in the flow direction.
  • the filter and the bottom part may then be arranged to convey the cooling water into said interspace.
  • FIG. 1 discloses a perspective view of a filter according to the invention.
  • FIG. 2 discloses a side view of a filter according to the invention.
  • FIG. 3 discloses another side view of a filter according to the invention.
  • FIG. 4 discloses a schematic side view of a fuel assembly for a boiling water reactor.
  • FIG. 5 discloses a schematic side view of a fuel assembly for a pressure water reactor.
  • FIG. 6 discloses a side view of a bottom part of the fuel assembly in FIG. 4 .
  • FIG. 7 discloses a view from above of the bottom part in FIG. 6 .
  • FIG. 8 discloses a sectional view from the side of the bottom part in FIG. 6 along the lines A—A in FIG. 7 .
  • FIGS. 1–3 disclose a filter 1 for separating particles from the cooling water in a nuclear plant.
  • the filter 1 has an inlet end 2 and an outlet end 3 .
  • the cooling water may thus flow through the filter 1 from the inlet end 2 to the outlet end 3 in a main flow direction x.
  • the filter 1 includes a number of sheets 4 , which extend substantially in the flow direction x from the inlet end 2 to the outlet end 3 .
  • the sheets 4 are arranged beside each other and form a package of attached sheets 4 .
  • the sheets 4 are preferably manufactured of a metallic material, for instance stainless steel.
  • the sheets 4 have a first portion 4 ′, which extends from the inlet end 2 in the flow direction x and which has a wave-shape in a direction y extending transversally to the flow direction x.
  • the sheets 4 also have a second portion 4 ′′, which extends from the outlet end 3 opposite to the flow direction x and which has a wave-shape in a direction y extending transversally to the flow direction x.
  • the sheets 4 have a third portion 4 ′′′, which extends in the flow direction x between the first portion 4 ′ and the second portion 4 ′′.
  • the third portion 4 ′′′ has a wave-shape in the flow direction x, i.e. the waves of the third portion 4 ′′′ extend transversally to the waves of the first portion 4 ′ and the second portion 4 ′′.
  • the sheets 4 are arranged beside each other and form passages for the cooling water through the filter 1 from the inlet end 2 to the outlet end 3 .
  • the sheets 4 may be provided beside each other in such a way that substantially each pair of adjacent sheets abuts each other at abutment points or possibly along abutment lines extending along the ridges in the flow direction x.
  • each passage between two adjacent sheets 4 will form a plurality of channels arranged beside each other between adjacent abutment lines.
  • Such an abutment is also obtained adjacent pairs of sheets 4 along the length of the second portion 4 ′′.
  • the sheets 4 are attached to each other by means of one or several welds, which are applied at the abutment.
  • the package of sheets 4 may be kept together to a self-supporting structure.
  • the sheets have many attachment points.
  • the particles, which by wear risk to damage the fuel, may of course damage the filter.
  • By means of many redundant attachment points the structure and assembly of the filter is not risked.
  • various types of clamping members may be arranged around the package of sheets and press these together against each other along said abutment lines.
  • the channels of the first portion 4 ′ form the inlet channels 6 for the cooling water flowing through the filter 1 .
  • the channels of the second portion 4 ′′ form the outlet channels 7 leading the cooling water out of the filter 1 .
  • the inlet channels 6 have a longer length than the outlet channels 7 in the flow direction x.
  • the inlet channels 6 also may be equally long as the outlet channels 7 or even shorter than the outlet channels 7 .
  • the inlet channel 6 has a centre line, which is substantially concentric with the centre line of the outlet channel 7 for each channel in the filter 1 , i.e. there is an outlet channel 7 located substantially opposite to an inlet channel 6 .
  • the inlet channels 6 and the outlet channels 7 have a larger width in the direction y than in a direction z, which is perpendicular to the direction y and the flow direction x and which extends transversally through the plates 4 substantially perpendicular to the extension plane x, y of the sheets 4 .
  • the width of each inlet channel 6 and outlet channel 7 in the direction y may be in the order of 8–11 mm, for instance 10 mm, and the width of each inlet channel 6 and outlet channel 7 in the direction z may be in the order of 3–6 mm, for instance 5,5 mm.
  • the total width of the filter 1 in the flow direction x may be in the order of 20–30 mm, for instance 25 or 28 mm, wherein the inlet channel 6 has a length in the order of 6–8 mm and the outlet channel 7 has a length in the order of 3–8 mm. It may be an advantage from a manufacturing point of view if the inlet and the outlet are symmetrical.
  • Each channel also includes an intermediate channel 8 , which extends between the inlet channel 6 and the outlet channel 7 and is arranged to convey the cooling water between the first portion 4 ′ and the second portion 4 ′′.
  • the intermediate channels 8 are formed by the third portion 4 ′′ of said sheets 4 .
  • the third portion 4 ′′′ connects the first portion 4 ′ and the second portion 4 ′′. Since the third portion 4 ′′′ of each sheet 4 also includes a wave-shape, which is perpendicular to the wave-shape of the first portion 4 ′ and the second portion 4 ′′, the intermediate channel 8 will extend in a curved path between the inlet channel 6 and the outlet channel 7 .
  • the curved path will thus have a curvature in a plane including the flow direction x and the direction z.
  • the intermediate channel 8 does not include channels that are delimited from each other in the same way as the inlet channels 6 and the outlet channels 7 .
  • Separate intermediate channels are defined partly by projections 9 of the sheets 4 .
  • the projections 9 are in the embodiment disclosed shaped as plastically deformed buckles of the sheet 4 . These buckles are positioned at the same distance from each other along a straight line as the ridges of the wave-shape of the first portion 4 ′ and the second portion 4 ′′.
  • the projections 9 are synchronised with the ridges of the first portion 4 ′ and the second portion 4 ′′, see FIG. 1 , but may also be displaced by half a wavelength in relation to the ridges of the first portion 4 ′ and the second portion 4 ′′, see FIG.
  • the third portion 4 ′′′ includes two part portions 10 , 11 , which extend substantially in parallel with the direction y and perpendicularly to the flow direction x.
  • the part portions 10 and 11 are arranged on a respective side of the line of projections 9 .
  • FIGS. 4 and 5 disclose two different types of fuel assemblies 15 and 16 , respectively, which are suitable for including the filter 1 .
  • FIG. 4 discloses a fuel assembly 15 intended for a boiling water reactor, BWR, and including an upper part 20 and a bottom part 21 .
  • a number of fuel rods 22 are provided between the upper part 20 and the bottom part 21 .
  • the fuel rods are in their lower ends connected to the bottom part 21 and in their upper end to the upper part 20 .
  • the fuel assembly 15 includes spacers 23 , which are distributed along the length of the fuel rod 22 and which serve the purpose of keeping the fuel rods 22 in a desired position.
  • the fuel assembly 15 includes a casing 24 , which extends between the upper part 20 and the bottom part 21 and which encloses all the fuel rods 22 .
  • a filter 1 according to the description above is arranged in the bottom part 21 .
  • the filter 1 is schematically indicated in FIG. 4 .
  • the fuel assembly 15 is arranged to permit cooling water to flow into the fuel assembly through the bottom part 21 and in between the fuel rods 22 .
  • the bottom part 21 is disclosed more closely in FIGS. 6–8 . From FIGS. 7 and 8 appears that the fuel assembly includes four filters 1 , which are located in a respective substantially square opening 27 of the bottom part 21 .
  • the filters 1 are provided in parallel with each other and all cooling water flowing into the bottom part 21 via an inlet orifice 28 will flow through any of the filters 1 .
  • the bottom part 21 also could include another number of openings 27 and filters 1 , for instance one single larger opening 27 with only one filter 1 .
  • FIG. 5 discloses a fuel assembly 16 for a pressure water reactor, PWR.
  • the fuel assembly 16 also includes an upper part 30 , a bottom part 31 and a number fuel rods 32 .
  • the fuel assembly 16 includes a number of guide tubes 33 extending between and connecting the bottom part 31 and the upper part 30 .
  • the fuel rods 32 are held by means of spacers 34 which are connected with the guide tubes 33 .
  • the filter 1 is also in this case arranged in the bottom part 31 and schematically indicated in FIG. 5 . All cooling water flowing into the fuel assembly between the fuel rods 32 will thus flow through the filter 1 .
  • the fuel assembly 16 includes only one single filter covering the whole area of the bottom part 31 seen in a horizontal section but also in this case the fuel assembly 16 may of course include more filters 1 , for instance four.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Filtration Of Liquid (AREA)
  • Laser Surgery Devices (AREA)
  • Physical Water Treatments (AREA)
  • Filtering Materials (AREA)
US10/466,832 2001-01-22 2002-01-21 Filter for cooling water in a light water cooled nuclear reactor Expired - Lifetime US7149272B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0100169A SE521610C2 (sv) 2001-01-22 2001-01-22 Filter och bränslepatron för en nukleär anläggning av lättvattentyp
SE0100169.2 2001-01-22
PCT/SE2002/000095 WO2002058075A1 (en) 2001-01-22 2002-01-21 Filter for cooling water in a light water cooled nuclear reactor

Publications (2)

Publication Number Publication Date
US20040076253A1 US20040076253A1 (en) 2004-04-22
US7149272B2 true US7149272B2 (en) 2006-12-12

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US10/466,832 Expired - Lifetime US7149272B2 (en) 2001-01-22 2002-01-21 Filter for cooling water in a light water cooled nuclear reactor

Country Status (9)

Country Link
US (1) US7149272B2 (de)
EP (1) EP1356474B1 (de)
JP (1) JP4064238B2 (de)
AT (1) ATE360253T1 (de)
AU (1) AU2002225568A1 (de)
DE (1) DE60219596T2 (de)
ES (1) ES2284847T3 (de)
SE (1) SE521610C2 (de)
WO (1) WO2002058075A1 (de)

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US20060283790A1 (en) * 2004-12-30 2006-12-21 Elkins Robert B Debris filter
US20070084782A1 (en) * 2005-10-05 2007-04-19 Enercon Services, Inc. Filter medium for strainers used in nuclear reactor emergency core cooling systems
US20090225924A1 (en) * 2006-07-22 2009-09-10 Areva Np Gmbh Device for removing solid particles from the cooling medium which circulates in the primary circuit of a nuclear reactor
US20110268240A1 (en) * 2008-12-31 2011-11-03 Areva Np Debris filter for use in a nuclear fuel assembly
WO2013053128A1 (zh) 2011-10-14 2013-04-18 中科华核电技术研究院有限公司 一种下管座过滤装置及使用该装置的防异物下管座
US8611488B2 (en) 2011-02-14 2013-12-17 Global Nuclear Fuel—Americas, LLC Debris exclusion and retention device for a fuel assembly
US20160336080A1 (en) * 2013-12-20 2016-11-17 China Nuclear Power Technology Research Institute Co., Ltd. Bottom nozzle and light-water reactor fuel assembly
WO2018046142A1 (en) 2016-09-06 2018-03-15 Westinghouse Electric Sweden Ab A fuel assembly
US20190066854A1 (en) * 2017-08-28 2019-02-28 Global Nuclear Fuel - Americas, Llc Debris filters for nuclear fuel assembly and method of using the same
EP3709310A1 (de) 2019-03-12 2020-09-16 Westinghouse Electric Sweden AB Filter und ein brennelement für ein kernkraftwerk
USD896943S1 (en) * 2017-12-18 2020-09-22 3M Innovative Properties Company Three dimensional filter frame

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RU2264666C2 (ru) * 2004-01-16 2005-11-20 Открытое акционерное общество "Машиностроительный завод" Антидебрисный фильтр тепловыделяющей сборки ядерного реактора
RU2308102C1 (ru) * 2006-04-06 2007-10-10 ФГУП Опытное конструкторское бюро "ГИДРОПРЕСС" Устройство для улавливания твердых частиц в тепловыделяющей сборке ядерного реактора (варианты)
SE530299C2 (sv) * 2006-09-12 2008-04-22 Westinghouse Electric Sweden Anordning och förfarande för hantering av en bränslepatron
EP2525362A1 (de) 2011-05-20 2012-11-21 Areva NP Ablagerungsfilter für eine Kernreaktorinstallation und Kernbrennstoffbündel mit solch einem Ablagerungsfilter
ES2641955T3 (es) 2011-12-12 2017-11-14 Dominion Engineering, Inc. Sistema de remoción de partículas
USD733202S1 (en) * 2013-04-30 2015-06-30 American Ceramic Technology Nuclear reactor tube shield
USD738946S1 (en) * 2013-04-30 2015-09-15 American Ceramic Technology Nuclear reactor boiler divider plate shield
USD732589S1 (en) * 2013-04-30 2015-06-23 American Ceramic Technology Nuclear reactor boiler divider plate shield
CN103337262B (zh) * 2013-06-18 2016-06-22 中国核动力研究设计院 一种具有过滤异物功能的下管座
US9847144B1 (en) * 2014-04-03 2017-12-19 Westinghouse Electric Company Llc Low pressure drop nuclear fuel assembly bottom nozzle
WO2018170428A1 (en) 2017-03-17 2018-09-20 Westinghouse Electric Company Llc Nuclear fuel assembly debris filtering bottom nozzle
CN107240424B (zh) * 2017-05-22 2019-11-15 岭东核电有限公司 一种燃料组件
WO2019132697A1 (ru) * 2017-12-28 2019-07-04 Акционерное Общество "Твэл" Тепловыделяющая сборка ядерного реактора
RU2765636C1 (ru) * 2021-06-21 2022-02-01 Публичное акционерное общество "Новосибирский завод химконцентратов" (ПАО "НЗХК") Устройство для улавливания твердых частиц в тепловыделяющей сборке ядерного реактора

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US8317035B2 (en) * 2004-12-30 2012-11-27 Global Nuclear Fuel-Americas, Llc. Debris filter
US20060283790A1 (en) * 2004-12-30 2006-12-21 Elkins Robert B Debris filter
US20070084782A1 (en) * 2005-10-05 2007-04-19 Enercon Services, Inc. Filter medium for strainers used in nuclear reactor emergency core cooling systems
US20090225924A1 (en) * 2006-07-22 2009-09-10 Areva Np Gmbh Device for removing solid particles from the cooling medium which circulates in the primary circuit of a nuclear reactor
US8705685B2 (en) * 2006-07-22 2014-04-22 Areva Gmbh Device for removing solid particles from the cooling medium which circulates in the primary circuit of a nuclear reactor
US20110268240A1 (en) * 2008-12-31 2011-11-03 Areva Np Debris filter for use in a nuclear fuel assembly
US8824621B2 (en) * 2008-12-31 2014-09-02 Areva Np Debris filter for use in a nuclear fuel assembly
US8611488B2 (en) 2011-02-14 2013-12-17 Global Nuclear Fuel—Americas, LLC Debris exclusion and retention device for a fuel assembly
WO2013053128A1 (zh) 2011-10-14 2013-04-18 中科华核电技术研究院有限公司 一种下管座过滤装置及使用该装置的防异物下管座
US10418135B2 (en) * 2013-12-20 2019-09-17 China Nuclear Power Technology Research Institute Co., Ltd Bottom nozzle and light-water reactor fuel assembly
US20160336080A1 (en) * 2013-12-20 2016-11-17 China Nuclear Power Technology Research Institute Co., Ltd. Bottom nozzle and light-water reactor fuel assembly
WO2018046142A1 (en) 2016-09-06 2018-03-15 Westinghouse Electric Sweden Ab A fuel assembly
CN109863565A (zh) * 2016-09-06 2019-06-07 西屋电器瑞典股份有限公司 燃料组件
US11075014B2 (en) 2016-09-06 2021-07-27 Westinghouse Electric Sweden Ab Filter zones with different filtering efficiencies for a fuel assembly of a nuclear water reactor
US20190066854A1 (en) * 2017-08-28 2019-02-28 Global Nuclear Fuel - Americas, Llc Debris filters for nuclear fuel assembly and method of using the same
US10923237B2 (en) * 2017-08-28 2021-02-16 Global Nuclear Fuel—Americas, LLC Debris filters for nuclear fuel assembly and method of using the same
USD896943S1 (en) * 2017-12-18 2020-09-22 3M Innovative Properties Company Three dimensional filter frame
EP3709310A1 (de) 2019-03-12 2020-09-16 Westinghouse Electric Sweden AB Filter und ein brennelement für ein kernkraftwerk
WO2020182873A1 (en) 2019-03-12 2020-09-17 Westinghouse Electric Sweden Ab A filter and a fuel assembly for a nuclear plant
US12112858B2 (en) 2019-03-12 2024-10-08 Westinghouse Electric Sweden Ab Filter and a fuel assembly for a nuclear plant

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SE0100169L (sv) 2002-07-23
DE60219596T2 (de) 2007-12-27
EP1356474A1 (de) 2003-10-29
JP4064238B2 (ja) 2008-03-19
JP2004522951A (ja) 2004-07-29
ATE360253T1 (de) 2007-05-15
SE521610C2 (sv) 2003-11-18
ES2284847T3 (es) 2007-11-16
US20040076253A1 (en) 2004-04-22
SE0100169D0 (sv) 2001-01-22
WO2002058075A8 (en) 2004-05-27
AU2002225568A1 (en) 2002-07-30
DE60219596D1 (de) 2007-05-31
EP1356474B1 (de) 2007-04-18
WO2002058075A1 (en) 2002-07-25

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